the program on your old machine to free up an activation "slot". Use Menu File > Activation > Deactivate Troubleshooting

: If you're having trouble with an activation key or need assistance, contact ChessBase's customer support directly. They can help resolve issues related to activation and software use.

He returned with a small piece of paper containing a 25-character code. "This is the Deep Fritz 12 activation key you're looking for. But be warned, it's not cheap."